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56F8027 View Datasheet(PDF) - Freescale Semiconductor

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Description
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56F8027
Freescale
Freescale Semiconductor Freescale
56F8027 Datasheet PDF : 181 Pages
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Table 2-3 56F8037/56F8027 Signal and Package Information for the 64-Pin LQFP (Continued)
Signal LQFP
Name Pin No.
Type
State During
Reset
Signal Description
TCK
29
(GPIOD2)
Input
Input/
Output
Input,
internal
pull-up
enabled
Test Clock Input — This input pin provides a gated clock to
synchronize the test logic and shift serial data to the JTAG/EOnCE
port. The pin is connected internally to a pull-up resistor. A Schmitt
trigger input is used for noise immunity.
Port D GPIO — This GPIO pin can be individually programmed as
an input or output pin.
After reset, the default state is TCK.
TMS
63
(GPIOD3)
Input
Input/
Output
Input,
internal
pull-up
enabled
Test Mode Select Input — This input pin is used to sequence the
JTAG TAP controller’s state machine. It is sampled on the rising
edge of TCK and has an on-chip pull-up resistor.
Port D GPIO — This GPIO pin can be individually programmed as
an input or output pin.
After reset, the default state is TMS.
Note: Always tie the TMS pin to VDD through a 2.2K resistor.
Return to Table 2-2
Part 3 OCCS
3.1 Overview
The On-Chip Clock Synthesis (OCCS) module allows designers using an internal relaxation oscillator, an
external crystal, or an external clock to run 56F8000 family devices at user-selectable frequencies up to
32MHz. For details, see the OCCS chapter in the 56F802x and 56F803x Peripheral Reference Manual.
56F8037/56F8027 Data Sheet, Rev. 6
40
Freescale Semiconductor
 

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